The EcoFlow Power Kit is one solution for RVers to keep gadgets alive while off the grid, and it's one I've used for years.
BSNL Wi-Fi Roaming Service : If You have BSNL's high-speed FTTH connectivity at homes, after registering With BSNL Wi-Fi Roaming service, even when you are outside, you can connect with BSNL's Wi-Fi ...